Smoke-stack



(No Model.)

B. VITALIS.

SMOKE STACK.

No. 402,873. Patented May 7 1889.

V Amm A TTORNEYI UNITED STATES PATENT OFFICE.

BAPTISTE VITALIS, OF PITTSBURG, PENNSYLVANIA.

SMOKE -STACK.

SPECIFICATION forming part of Letters Patent No. 402,873, dated May '7, 1889.

Application filed Jctobci 6, 1888.

To all whom it may concern:

Be it known that I, BAPTIsTE VITALIs, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Smoke- Stacks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in smoke-stacks; and it consists in certain features of construction and in combination of parts hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figures 1 and 2 are plans in section. Fig. 3 is an elevation partly in section. Fig. at is an enlarged elevation in section in detail.

In carrying out my invention I first erect an outside casing, in the main of sheet metal, the diiferent sheets or sections A being cylindrical in form and abutting each other endwise, the different sections being connected by bands at, located preferably outside the casing, the bands of course being bolted or riveted to the adjacent sections A. WVith such construction the securing bolts or rivets do not sustain the weight of the casing, and 0011- sequently are not subjected to any sheering strain, such weight of the casing being sustained by the sheets or sect-ions A restingone on the other.

In constructing the smoke-stack the different bands at are usually secured to the upper end of the different sections A; hence the next section brought intoplace has a socket to rest in, that greatly facilitates the assembling the parts in erecting the stack. A series of metal bars, B, are secured lengthwise of the casing, and preferably inside thereof, such bars being preferably separated from the easing by intervening washers or thimbles, b, so that air may freely circulate between the bars and easing. These bars greatly strengthen the casing, and in case, as frequently happens, a sheet A or a portion thereof rusts out or becomes otherwise damaged such sheet or portion thereof may be removed and its place supplied with new material, the bars B meantime holding the stack in place.

Serial No. 287,430. (No model.)

Bands a are much thicker than plates or sections A. The ladders are therefore secured directly to the bands for greater security, as many serious accidents have occurred from the ladders breaking loose from the sheets of the stack by reason of the rivets drawing out in rusty places of such sheets.

Where it can conveniently be done, the securing-bolts may pass through a section of the ladder, through a band, a, and through abar, B. The smoke-stack has a brick lining, and this is separated from the casing to provide air-spaces D. These'air-spaces are ducts terminating below in openings (1 at or near the bottom of the stack, and terminating above in lateral openings cl, so that a free circulation of air is had between the metal casing and the brick lining, that prevents either from becoming overheated, and consequently renders each more durable. Preferable forms for the bricks suitable for lining are shown at O and C, Fig. 1, the inner faces of these bricks being circular and the outer faces having angular projections, respectively, 0 and c. When the bricks C and C are laid to break joint, projections c 0 may abut bars B, or these projections may engage shell A, if preferred, and in either case the air-ducts D, greater or smaller, are had for purposes aforesaid. Ordinary circular bricks, E, may be used for a lining, as shown in Fig. 2, with headers 6 extending to the casing, as shown.

I H is a cap that covers the brick-work and smoke-stack generally at the top, having a central opening, as shown, and having a rib, h, that fits outside the casing. apron II, that is a part of the cap, by proj ecting laterally some distance beyond the sides of the stack, as shown in Fig. 2, keeps the storms from entering orifices d. With the lining maybe supported by means of bars B, so that sections of either may be removed and renewed when necessary.

A strong band, I, is provided for attaching, for instance, hooks of tackle-blocks for elevating material and for other purposes. Band I is usually bolted to apron H, the band having also a series of braces, t, the latter extending to the casing A. Band I is so far removed from the flue of the stack that hooks or other The inclined the construction shown both the casing and v attachments engaging such band do not become overheated, and thereby rendered unsafe. Hooks or other attachments engaging band I may travel on the band around the smokestack, thus providing facilities for painting the stack and for various purposes.

My improved construction, although more frequently used in connection-with smokestacks, is well adapted to cupolas for foundries and for stacks for blast-furnaces, and, if preferred, the shell may be made conical instead of cylindrical.

Vhat I claim is 1. In a smoke-stack, the c0mbination,with sheet-metal casing consisting of cylindrical sections adapted to abut each other e'ndwise, substantially as indicated,of embracing-bands at the joints for securing contiguous sections, a lining located within the casing, and the longitudinal metal strips located between the casing and lining and bracing both, substantially as set forth.

2. The combination, with smoke-stack consisting of a casing and lining, of a series of metal bars secured against the outer face of the lining and blocks interposed between the bars and casing, substantially as set forth.

3. In a smoke-stack, the combination, with a metal casing, of a lining composed of bricks having concave inner faces and a central projection on its outer face and bricks having concave inner faces and end projections on its outer face, the said bricks being arranged in alternate layers to break joints, substantially as set forth.

4. The combination, with metal casing and longitudii'ial bars secured to the casing, substantially as indicated, of lining-bricks having angular projections, substantially as indicated, such projections abutting the longitu clinal' bars for forming air-ducts between. the lining and casing, substantially as set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 22d day of June, 1888.

EAPTISTE VITALIS.

\Vitnesses:

(inns. ll. DORER, ALBERT E. LYNCH. 

